Summer is intern season here. there will be a lot of you guys, and most likely guys in a very similar situation as yourself. DC is a fun town, and super gay friendly (we run the government). You won't be lacking options.
Put yourself out there, don't be afraid to approach someone. More likely than not he's friendly and interested in talking too, but to timid to actually initiate it.

Not really a "store" out the annoying kiosk w/ the over aggressive foreign sales people who try and push their exotic sand soap scrub anti-aging whatever product or whatever... I'm a man, I'm at the mall to buy a specific item, and your beauty shit is not on the list; also I'm gay and don't want to flirt w/ you in a lame ass attempt to get your fake number while shelling out a small ransom for a shitty mother's day gift.